s and dendritic
growths of Sylvanite , some with patterns, come from the Transylvania in Romania at Baia de Arieş (Offenbánya), Alba Co.; and Sacarîmb (Nagyág), Hunedoara Co. Elongated crystals often with deep striation
s or skeletal/hopper
ed growths are highly regarded from the Emperor Mine, Vatukoula, Viti Levu, Fiji.
There are several important Colorado localities of Sylvanite; most notable is the Cripple Creek District, Teller Co., Colorado. Other Colorado localities include the Keystone Mine, Magnolia District, Boulder Co.; the Jamestown District, Boulder Co., and the Bessie G Mine, La Plata Co., Colorado.